{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4422-1BC46","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4422-1BC46","canonicalUrl":"https://aoctrl.com/siemens/3RW4422-1BC46","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4422-1BC46","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS soft starter, 3RW4422-1BC46, 50 A at 40 °C, 230 V 50/60 Hz, integrated bypass, thyristor switching.","salesMarkdown":"The Siemens 3RW4422-1BC46 is a SIRIUS-brand soft starter rated 50 A at 40 °C, stepping down to 45 A at 50 °C and 40 A at 60 °C — the 40 °C figure is the one to size your motor against unless the cabinet runs cooler. It switches via thyristors and includes an integrated bypass contact system, which means once the motor is up to speed, the thyristors are shorted out and the current runs through the bypass contacts. That cuts heat dissipation in the panel and extends the life of the semiconductor stack. The insulation voltage is rated 690 V, giving headroom for 400 V systems and some 480 V installations. Operating frequency covers 50 to 60 Hz at 230 V. Minimum load is 8% of the rated current, so it handles lightly loaded conveyors or pumps without dropping out. ## Mounting and wiring — what fits in the enclosure The unit measures 170 mm wide, 192 mm high, 270 mm deep. Mounting is screw fixing on a vertical surface, rotatable ±90° or tiltable ±22.5° front-to-back. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides — the side gap is tight enough that adjacent devices can sit close. Main circuit terminals are box terminals. Stranded wire: 2x 4 to 50 mm². Solid wire: 2x 0.5 to 2.5 mm². Auxiliary and control circuit wiring uses screw-type terminals sized for 2x 20 to 14 AWG. Maximum motor cable length is 500 m — beyond that, reflected wave spikes at the motor terminals become a concern even with a soft starter.","metaTitle":"Siemens 3RW4422-1BC46 SIRIUS Soft Starter, 50A at 40°C","metaDescription":"Siemens SIRIUS 3RW4422-1BC46 soft starter, 50A rated at 40°C, 230V 50/60Hz, integrated bypass, thyristor switching. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"170mm","title":"3RW4422-1BC46","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 690 V, 40 °C standard: 29 A, 30 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<<","During Storage":"-25 ... +80°C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","Product Designation":"Soft starter","Wire Length Maximum":"500m","Derating Temperature":"40°C","Inside-Delta Circuit":"Yes","at 50 Hz rated value":"230V","at 60 Hz rated value":"230V","at 40 °C rated value":"50A","at 50 °C rated value":"45A","at 60 °C rated value":"40A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"box terminal","Motor Overload Protection":"Yes","Using Both Clamping Points":"2x (10 ... 1/0)","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Using The Back Clamping Point":"10 ... 2/0","Insulation Voltage Rated Value":"690V","Using The Front Clamping Point":"10 ... 2/0","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"Display","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"screw-type terminals","Product Component Motor Brake Output":"Yes","during storage according to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","reference code according to EN 61346-2":"Q","during operation according to IEC 60721":"3K6 (no formation of ice, no condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6","during transport according to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Evaluation Of Thermistor Motor Protection":"Yes","at standard circuit at 40 °C rated value":"18.5kW","at standard circuit at 50 °C rated value":"20hp","Finely Stranded Without Core End Processing":"2x (4 ... 35 mm²)","number of CO contacts for auxiliary contacts":"1","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"AC","at inside-delta circuit at 40 °C rated value":"30kW","at inside-delta circuit at 50 °C rated value":"40hp","Control Supply Voltage Frequency 1 Rated Value":"50Hz","Control Supply Voltage Frequency 2 Rated Value":"60Hz","Installation Altitude At Height Above Sea Level":"5 000m","continuous operating current [% of Ie] at 40 °C":"115%","Operating Voltage At Standard Circuit Rated Value":"400 ... 690V","at 690 V at standard circuit at 40 °C rated value":"30kW","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"400 ... 600V","Relative Negative Tolerance Of The Operating Frequency":"-10%","Relative Positive Tolerance Of The Operating Frequency":"10%","For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (20 ... 16)","Relative Negative Tolerance Of The Control Supply Voltage Frequency":"-10%","Relative Positive Tolerance Of The Control Supply Voltage Frequency":"10%","Relative Negative Tolerance Of The Operating Voltage At Standard Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Standard Circuit":"10%","power loss [W] at operational current at 40 °C during operation typical":"8W","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-15%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-15%","relative positive tolerance of the control supply voltage at AC at 50 Hz":"10%","relative positive tolerance of the control supply voltage at AC at 60 Hz":"10%","Adjustable Motor Current For Motor Overload Protection Minimum Rated Value":"5A","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,869.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f55fec8d5f1ceb5774c1ec227d7ec244.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=249691&mlfb=3RW4422-1BC46"},"ai":{"faq":[{"question":"What are the key ratings I need to verify for my motor?","answer":"The soft starter is rated 50 A at 40 °C, 45 A at 50 °C, and 40 A at 60 °C. Operating voltage is 230 V at 50/60 Hz. Insulation voltage is 690 V. Minimum load is 8% of rated current. Motor overload protection is built in, and current limitation is adjustable."},{"question":"What are the mounting dimensions and clearances?","answer":"Width 170 mm, height 192 mm, depth 270 mm. Clearance required: 100 mm above, 75 mm below, 5 mm at the sides. Mounting is screw fixing on a vertical surface, rotatable ±90° or tiltable ±22.5°."},{"question":"What wire sizes does the 3RW4422-1BC46 accept?","answer":"Main circuit box terminals accept stranded 2x 4 to 50 mm² and solid 2x 0.5 to 2.5 mm². Auxiliary and control circuit screw terminals accept 2x 20 to 14 AWG. Maximum motor cable length is 500 m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4422-1BC46","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RW4422-1BC46 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}